Adrian Kaplan, WalletHub Credit Card Consultant
@kaplanlier11
You can apply for the Citi Diamond Preferred card either online or over the phone at (800) 505-1675. Alternatively, you can also submit an application in-person, at your local Citibank branch.
Here's how to apply for the Citi Diamond Preferred card:
- Online: Applying online is the fastest and most straightforward way. You can either do that on sites like WalletHub, or through Citibank’s website. Usually, a decision is made instantly when you apply online. You will need to fill in a form with your personal, contact, and financial information.
- By Phone: Call (800) 505-1675 and follow the automated prompts to get connected with a customer service representative. You will then be guided through the application process.
- In-person: Visit your local Citibank branch and let a representative know that you would like to apply for the Citi Diamond Preferred card.
When you apply for the Citi Diamond Preferred card, you will need to provide personal information such as your name, address, Social Security number (SSN), email, and phone number. You will also have to provide some financial information like your annual income and monthly housing payments.
The Citi Diamond Preferred card requires good credit or better (a credit score of 700+) for good odds of approval. Applying triggers a hard inquiry on your credit report, which can temporarily lower your credit score. So if you don't know where you stand, you can always check your credit score for free, right here on WalletHub.

Citi® Diamond Preferred® Card
Kyle Rowland, Member
@kyle_rowland
Just make sure you've got your details at hand and that your score is top notch, as this one isn't that easy to get.
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